Concerning dose buildup at the air-tissue interface.
D000388:Air; D003037:Cobalt Radioisotopes; D005214:Fast Neutrons; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D008953:Models, Anatomic; D011829:Radiation Dosage; D011882:Radiotherapy, High-Energy / Q000295:instrumentation; D012867:Skin
D003037:Cobalt Radioisotopes